AERCO SmartPlate - Manual (Page 64)

SmartPlate Installation, Operation & Maintenance Manual
CHAPTER 8 – CORRECTIVE MAINTENANCE
Page 64 of 138 AERCO International, Inc.  100 Oritani Dr.  Blauvelt, NY 10913 OMM-0069_0E
PRI: 11/26/2013 Phone: 800-526-0288 SP-100
8.6 DOUBLE-WALL HEAT EXCHANGER CLEANING
The Double-Wall Heat Exchanger can be cleaned in-place by circulating cleaning agents
through the unit, or by disassembly.
8.6.1 Heat Exchanger Cleaning and De-Scaling (In-Place Method)
If the Heat Exchanger is not encrusted with hardened scale deposits, it can normally be cleaned
by circulating cleaning agents (AERCO HydroSkrub or equivalent) through the assembly.
Perform the procedures specified in Section I, paragraph 8.3 of this Chapter.
8.6.2 Heat Exchanger Cleaning By Disassembly
If the Heat Exchanger is encrusted with hardened scale or sediment, the SmartPlate will have to
be drained and the Double-Wall Heat Exchanger opened as follows:
1. Set the POWER Switch on the ECS/SP Control Box to the OFF position to stop the
Recirculation Pump.
2. Close all four SmartPlate Heater Isolation Ball Valves (Figure 8-5).
3. Connect a hose to the Strainer on the Boiler Water side of the piping assembly (Figure 8-
6).
Figure 8-6. Draining the SmartPlate Double-Wall Heater